Metric Sprockets Overview
TL Taper Bushed Metric Sprockets
TL Sprockets are stocked in a wide variety of sizes including ISO 06B, 08B, 10B, 12B, 16B and 20B chain sizes (3/8 to 1-1/4” pitch) for single, double and triple chain. These mount with regular TL tapered bushings from 1008 thru 5050 (we.e., thru a 5” or 125mm shaft diameter). TL Sprockets can be found in an array of diameters to accommodate various application speeds. The more popular sizes are stocked with hardened the teeth. The C45 material, standard steel sprockets, allows for induction hardening of teeth. So all could be heat treated Hardened The teeth on demand. The TL Taper Bushed Sprocket provides a true concentric match to the shaft. As the TL bushing screws are tightened, the bushing compresses around the shaft securely. Standard hex wrenches will be the only tool required for set up or removal. After the bushing mounting screws are loosened and taken out, the screw is re-used and threaded into the bushing removal hole. Tightening the removal screw will softly loosen the sprocket. PTI stocks both metric and inch bore TL bushings, a typical global design, which is why the TL sprocket is so versatile. Simple installation, concentric shaft match, ideal for higher speeds and heavy loads plus an economical cost, make this the popular choice for new styles and replacement needs. TL sprockets are generally less expensive than customized or completed bored sprockets. Hub Type Metric Sprockets Hub Type Metric Sprockets are available with a minimum simple bore (pilot bore) plus some share completed bore sizes. Any shaft size is possible with our custom bore and keyway capability. Sprockets with hubs are typically fitted to the shaft as a clearance suit. They are held in place with two set screws and a keyway. Clearance fits are well-known for light loads and slow speeds. A press fit (or shrink match to the shaft) is usually preferred for higher speeds or heavier loads as they match to the shaft more securely than a clearance suit sprocket. According to the clearance of the shaft fit, sprockets may work slightly on the shaft causing possible fretting or shaft wear. All standard hub sprockets can be found with hardened teeth from stock or on request. Press fits usually require the sprocket to become heated for set up to broaden the bore. As a heated sprocket cools, it shrinks, conforming to the shaft with a tight grip. A established screw secures the key. The TL Taper Bushed Sprocket will function just like the press fit sprocket and generally simpler to install. Plate Type Metric Sprockets Plate Sprockets for single, double or triple strand chain are an economical choice allowing for direct mounting to the customers’ hub or shaft. They are most regularly regarded as for sprockets above 40 teeth and so are available in a wide selection of diameters. Plate type sprockets could be welded or bolted right to the users’ hub keeping gear compact and light weight. They can be purchased in single, dual and triple tooth configurations aswell. Weld on Hubs A Weld-On-Hub is often used to simplify mounting, especially huge diameter sprockets. PTI stocks regular TL Weld-OnHub sizes. The Weld-On-Hub uses the typical TL bushings as perform many of the other standard drive elements. TL Bushings are stocked in both metric and in . bores. TL Bushings for Weld-On-Hubs or TL Bushed Sprockets TL Taper Bushings for Weld-OnHubs and sprockets are stocked from 1008 thru 5050 sizes covering 5” or 125mm shaft sizes. TL Bushings are perfect for replacements and a modern remedy for upgrading clearance match and press fit sprockets. TL Bushings are used in a wide variety of various other European and American standard drive products. Stainless Steel Metric Sprockets Stainless Steel (AISI 304L) Metric Sprockets provide corrosion resistance and allow wash-down ability. These hub type sprockets can be given a finished bore and keyway. Stainless Sprockets cannot be hardened. PTI stocks sizes from ISO 06B thru 16B (3/8” -1” pitch) and from 12 to 25 & 30 the teeth. Larger sizes on ask for. TL Bushed edition also on ask for. Metric Idler and Double-Solitary Sprockets Metric Idler Sprockets are plate sprockets with a ball bearing for installation. These sprockets generally offer pressure for the chain drive and can be utilized within a tension arm assembly or individually mounted to put the drive. Stock sizes are available for ISO 05B thru 20B metric chain sizes. Double-Single Sprockets, well-known on conveyors, allow 2 single chains on a single sprocket to regulate pairs of rolls or drive models that must index. Custom Metric or ANSI Sprockets Custom made sprockets including huge diameter metal or cast iron devices for one, duplex or triple strand chain could be made to order. PTI typically will keep some stock in our European warehouse, so delivery could be rather quick. Other customized sprockets sizes for Metric conveyor chain or ANSI chain are also feasible. Drawings are preferred to insure requirements are clear. All are possible with custom finished bore.